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// Package templates exposes the embedded HTML theme and shared sub-templates
// used by the generator. Themes and nav/HTML fragments live as separate files
// under templates/themes/*.tmpl and templates/shared/*.tmpl so they can be
// edited without recompiling logic; they are compiled into the binary via
// //go:embed so snonux still ships as a single self-contained executable.
package templates
import (
"embed"
"fmt"
"io/fs"
"path"
"sort"
"strings"
)
//go:embed themes/*.tmpl shared/*.tmpl
var FS embed.FS
// Theme reads the raw HTML template body for a named theme.
// The returned string is the outer page template; shared sub-templates
// (navhints, navmodal, navscript, etc.) are obtained via Shared().
func Theme(name string) (string, error) {
b, err := FS.ReadFile(path.Join("themes", name+".tmpl"))
if err != nil {
return "", fmt.Errorf("read theme %q: %w", name, err)
}
return string(b), nil
}
// Shared reads a named shared sub-template file from shared/*.tmpl.
func Shared(name string) (string, error) {
b, err := FS.ReadFile(path.Join("shared", name+".tmpl"))
if err != nil {
return "", fmt.Errorf("read shared template %q: %w", name, err)
}
return string(b), nil
}
// ThemeNames returns a sorted list of available theme names derived from the
// files present under templates/themes/.
func ThemeNames() ([]string, error) {
entries, err := fs.ReadDir(FS, "themes")
if err != nil {
return nil, fmt.Errorf("list theme dir: %w", err)
}
names := make([]string, 0, len(entries))
for _, e := range entries {
if e.IsDir() {
continue
}
n := e.Name()
if !strings.HasSuffix(n, ".tmpl") {
continue
}
names = append(names, strings.TrimSuffix(n, ".tmpl"))
}
sort.Strings(names)
return names, nil
}
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